Here is a reference for wedding flowers by season. It has comments on their uses, costs and meaning.
The costs given are in general terms because things such as air shipping, greenhouse cultivation and imported flowers will add to the expense of the flowers.
The costs of the flowers will also vary from region to region at any time of the year.
Flowers that can be found locally and in season (or even from your own garden) will keep the costs down.

image by exfordy
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Alstroemeria
A variety of the lily family: available in many colors; purple, yellow, pink, white, red. Useful as a filler in corsages and arrangements; very hardy.
Available - all year round
Cost - inexpensive
Symbolizes - devotion |

image by joka200
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Anemone
Large single or double blossoms in pink, red, or white. Useful in bouquets and arrangements.
Wedding flowers by season
Available - winter
Cost - moderate
Symbolizes - expectation |

image by maggie94 |
Aster
A large filler flower; available in purple, lavender, pink, and white. Useful in bouquets and arrangements.
Available - summer and fall (autumn)
Cost - inexpensive when in season
Symbolizes - elegance and love |

image by silviucucerzan
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Azalea
A multi blossomed decorative flower; available in pink, deep pink, and white, best used as a potted display.
Wedding flowers by season
Available - late spring and summer
Cost - moderate
Symbolizes - temperance |

image
by Beth Rankin
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Baby's Breath
A light filler flower; available in pink or white. Used in bouquets, corsages and button holes (boutonnières).
Wedding flowers by season
Available - all
year round
Cost - inexpensive
Symbolizes - innocence |
image by too far north
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Calla Lily
(a popular wedding flower choice)
This is not really a lily, large white, yellow or pink tropical flower. High style look best used in bouquets or arrangements.
Available - spring and summer
Cost - expensive
Symbolizes - magnificent beauty |
image by VAYardley
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Camellia
The flowers are large, fluffy and delicate with shiny foliage; available in pinks or white. Useful in bouquets and arrangements.
Wedding flowers by season
Available - spring
Cost - moderate when in season
Symbolizes - perfection and loveliness |

image by theogeo
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Carnation
(a popular wedding flower choice)
A popular flower which is versatile. Full size or miniature blooms: available in pink, red and white. Useful in bouquets and arrangements.
Available - all
year round
Cost - inexpensive
Symbolizes - love and devotion |
image by jam343
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Chrysanthemum
(a popular wedding flower choice)
There are several varieties; pom-pom, spider, miniature buttons, all in
many colors. Useful in bouquets and arrangements.
Available - all
year round
Cost - inexpensive
Symbolizes - wealth, abundance and truth |

image by mason2008
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Daffodil
Available in miniature and full size trumpet
shaped flowers; in orange, yellow, white or exotic varieties. Often potted for garden settings.
Available - spring
Cost - inexpensive when in season
Symbolizes - regard |

Image
by jam343 |
Dahlia
Large, multi petaled, daisy like flower; available in many vivid colors. Used in bouquets and arrangements.
Wedding flowers by season
Available - summer
Cost - moderate
Symbolizes - dignity and elegance |

Image
by Sandra Mora |
Daisy
A wildflower in yellow or white; best used in casual bouquets and arrangements.
Available - spring and summer
Cost - inexpensive when in season
Symbolizes - innocence and romance |

image
by satrina0
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Delphinium
(a popular wedding flower choice)
Large, multi blossomed flower, in white or shades of blue. A traditional wedding flower best used in arrangements.
Available - summer
Cost - moderate
Symbolizes - swiftness and lightness
|

image by jessicafm
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Freesia
Fragrant, seasonal flower available in
many colors, including mixed. Used in bouquets.
Available - spring and summer
Cost - inexpensive when in season
Symbolizes - innocence |
image by aeden
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Gardenia
A fragrant white flower; used in bouquets and boutonnières.
Available - all
year round
Cost - expensive
Symbolizes - purity and secret love |
image by megamefta |
Geranium
A favorite potted plant with bright green leaves and compact white, pink or red flowers, best used in pots.
Available - summer
Cost - inexpensive
Symbolizes - home and hospitality love |

image
by fonticulus
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Gerbera Daisy
(a popular wedding flower choice)
Large, daisy like flower, many vivid colors. Used for bouquets and arrangements.
Wedding flowers by season
Available - all
year round
Cost - moderate
Symbolizes - beauty |

image by Nemo's great uncle
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Gladiola
Tall, stately, multi blossomed stems, available in
many colors. Best suited to arrangements.
Available - all
year round
Cost - inexpensive in summer
Symbolizes - generosity |

image by chrismason
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Hyacinth
Multi blossomed bulb flower, in pink, purple, and blue. Best used in pots for a garden wedding.
Available - spring
Cost - moderate
Symbolizes - joy and play |

image by stormyred28
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Iris
Small dutch iris or large, bearded iris available in blue, white and exotic varieties. Used in arrangements or pots.
Wedding flowers in season
Available - spring
Cost - moderate to expensive
Symbolizes - message of faith and wisdom |

image by mildlydiverting |
Ivy
(a popular choice)
Green filler. English or petit point; lovely in cascade bouquets.
Available - all
year round
Cost - inexpensive
Symbolizes - fidelity, friendship, marriage |

image by grandalf grey |
Lily
(a popular wedding flower)
Large, star shaped flowers; available in orange, yellow, pink, white and exotic varieties. Used in bouquets and arrangements.
Wedding flowers by season
Available - all
year round
Cost - moderate (in summer) expensive when imported
Symbolizes - majesty, truth and honor |
image by Sarah Cady |
Lily of the Valley
A traditional wedding flower; fragrant, small, bell
shaped flowers, always white. Used in combination with other flowers.
Wedding flowers in season
Available - spring and summer
Cost - expensive
Symbolizes - happiness |
image by scarlatti2004 |
Marigold
Small to medium flowers; available in a range of autumn (fall) colors. Used in casual bouquets and arrangements.
Available - late summer and autumn (fall)
Cost - moderate
Symbolizes - good luck, magic, vision |
image by T.Kiya |
Nerine Lily
Tall, multiple trumpet
shaped flowers; exotic look in pale or hot pinks. Used in bouquets or arrangements.
Available - all year
Cost - expensive
Symbolizes - majesty and power
|
image by mscaprikell |
Orange Blossom
A traditional wedding flower from ancient times; very hard to get and very delicate. Stephantis is now used in its place.
Wedding flowers in season
Available - hard to find
Cost - expensive
Symbolizes - purity, chastity and love |
image by nico-zeissig |
Orchid
(a popular wedding flower choice)
Large and small, in many exotic colors and varieties including white. Used in bouquets, corsages and boutonnières.
Wedding flowers in season
Available - all
year round, can be imported
Cost - expensive
Symbolizes - love and beauty |
image by aulusgellius |
Peony
(a popular wedding flower choice)
Large and fluffy pink or white flowers. Best used in arrangements.
Available - late spring
Cost - expensive
Symbolizes - bashfulness, also the American spirit of ambition and determination  |
image by Reenie-Just Reenie |
Queen Anne's Lace
A lacy white filler. Used in corsages, wreaths, bouquets and arrangements.
Wedding flowers in season
Available - summer
Cost - inexpensive
Symbolizes - magic, trust, healing |

image by couscouschocolat
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Rose
(a popular wedding flower choice)
A fragrant, traditional wedding flower. Full blooms or buds can be used.
Many colors are available. Used in bouquets, corsages, boutonnières and arrangements.
Available - all
year round
Cost - moderate to expensive
Symbolizes - love, joy, beauty |

image
by wilmack
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Statice
A filler flower, available in yellow, white and purple. Used in arrangements. A dried flower look.
Available - all
year round
Cost - inexpensive
Symbolizes - no record of meaning |

image
by solsken
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Stephanotis
(a popular wedding flower choice)
A traditional wedding flower. Fragrant white or pink trumpet
shaped flowers. Used in bouquets and arrangements.
Available - all
year round
Cost - moderate
Symbolizes - material happiness |

image
by mundoo
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Stock
(a popular wedding flower)
Large, multi blossomed flower. Available in
many colors. Used as a filler in arrangements.
Wedding flowers in season
Available - all
year round
Cost - inexpensive
Symbolizes - lasting beauty |

image by johnm2205
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Tulip
(a popular wedding flower)
Stately flower which can be imported. Many varieties and colors available. Use in bouquets and arrangements.
Available - late spring
Cost - expensive
Symbolizes - love and passion |

image by zizzybaloobah
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Zinnia
Small to large flowers, available in
many colors. Used in casual bouquets and arrangements.
Wedding flowers by season
Available - summer
Cost - inexpensive
Symbolizes - friendship and affection
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